Magnetosheath fluctuations at Venus for two extreme orientations of the interplanetary magnetic field

	Magnetosheath fluctuations at Venus for two extreme orientations of the interplanetary magnetic field
	Du J(杜艰) ; Zhang, T. L. ; Wang C(王赤) ; Volwerk, M. ; Delva, M. ; Baumjohann, W.
刊名	Geophysical Research Letters
	2009
卷号	36 页码:L09102
关键词	express waves plasma barrier
ISSN号	0094-8276
通讯作者	北京8701信箱
英文摘要	Using the magnetosheath crossings of Venus Express on two consecutive days, we investigate magnetic fluctuations in the same locations for two extreme interplanetary magnetic field orientations, i.e., nearly along and nearly perpendicular to the solar wind flow. It is shown that the properties of the fluctuations are drastically different at basically the same location of the spacecraft in the magnetosheath. The strength and properties of the fluctuations are strongly controlled by the types of the upstream bow shock. The magnetic fluctuations behind a quasi-parallel bow shock are quite strong and turbulent, having a strongly variable angle alpha(eB) between maximum variance direction of the fluctuations and the direction of the magnetic field, which may be convected from the upstream waves in the foreshock. The magnetic fluctuations behind a quasi-perpendicular bow shock are less intensive and wave-like, showing a less perturbed angle alpha(eB), which are probably generated locally.
学科主题	空间物理
收录类别	SCI
原文出处	http://www.agu.org/pubs/crossref/2009/2009GL037725.shtml
语种	英语
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/975]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Du J,Zhang, T. L.,Wang C,et al. Magnetosheath fluctuations at Venus for two extreme orientations of the interplanetary magnetic field[J]. Geophysical Research Letters,2009,36:L09102.
APA	杜艰,Zhang, T. L.,王赤,Volwerk, M.,Delva, M.,&Baumjohann, W..(2009).Magnetosheath fluctuations at Venus for two extreme orientations of the interplanetary magnetic field.Geophysical Research Letters,36,L09102.
MLA	杜艰,et al."Magnetosheath fluctuations at Venus for two extreme orientations of the interplanetary magnetic field".Geophysical Research Letters 36(2009):L09102.